Mouse/Rat LEPTIN immunoassay is a 3.5 - 4.5 hour solid phase ELISA designed to measure Mouse and Rat LEPTIN in cell culture supernates, serum, and plasma. It contains recombinant mouse LEPTIN and antibodies raised against this protein. It has been shown to accurately quantify recombinant mouse LEPTIN. Results obtained with naturally occurring LEPTIN samples showed linear curves that were parallel to the standard curves obtained using the kit standards. These results indicate that the immunoassay kit can be used to determine relative mass values for natural Mouse or Rat LEPTIN.